ArticleIn vitro cellular & developmental biology. Animal2023
Macrophage pyroptosis promotes synovial fibrosis through the HMGB1/TGF- β1 axis: an in vivo and in vitro study.
Article in In vitro cellular & developmental biology. Animal, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 8 citations in OpenAlex.
- Camouflage Protein-Engineered Extracellular Vesicles Alleviate TMJ-OA by Hijacking Caspase-1 to Suppress Pyroptosis.Journal of extracellular vesicles · 2026Article
- Targeting pyroptosis in renal fibrosis: From molecular mechanisms to therapeutic horizons (Review).International journal of molecular medicine · 2026Review
- Silencing OTUB1 induces pyroptosis to inhibit the growth of liver cancer HepG2 cells via the NLRP3/caspase/GSDM signaling pathway.Journal of gastrointestinal oncology · 2026Article
- Revisiting osteoarthritis pathogenesis through the lens of cGAS-STING: Mitochondrial damage, pyroptosis, and inflammatory cascades.Journal of orthopaedic translation · 2026Review
- Involvement of the pyroptosis-HMGB1 axis in systemic diseases.Frontiers in cell and developmental biology · 2026Review
- ATP-P2X7R-NLRP3 Axis as a Unifying Mechanism of ATP-Induced Cell Death in Degenerative Bone and Cardiovascular Diseases.Journal of inflammation research · 2026Review
- Pyroptosis: candidate key targets for mesenchymal stem cell-derived exosomes for the treatment of bone-related diseases.Stem cell research & therapy · 2025Review
- Suppression of NUPR1 in fibroblast-like synoviocytes reduces synovial fibrosis via the Smad3 pathway.Journal of translational medicine · 2024Article
- Pyroptosis-related crosstalk in osteoarthritis: Macrophages, fibroblast-like synoviocytes and chondrocytes.Journal of orthopaedic translation · 2024Review
- Exploration of the Key Pathways and Genes Involved in Osteoarthritis Genesis: Evidence from Multiple Platforms and Real-World Validation.Journal of inflammation research · 2024Article
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
Abstract
Macrophages and fibroblasts are the main effector cells in synovial tissue in the knee joint. Our previous studies showed that there was synovial macrophage pyroptosis in knee osteoarthritis (KOA) and that inhibiting this pyroptosis could alleviate synovial fibrosis. In the present study, we aimed to elucidate the mechanism by which macrophage pyroptosis affects synovial fibrosis. We established an LPS/ATP-induced model in macrophages that mimicked the inflammatory environment of KOA and induced macrophage pyroptosis. The TGF-β1, SMAD3, and P-SMAD3, and the synovial fibrosis markers (Collagen I, TIMP1, Vimentin, and TGF-β1) were significantly decreased after fibroblasts were cultured with RAGE inhibitors and SMAD3 inhibitors. Moreover, ELISA and immunofluorescence analysis showed that macrophage pyroptosis induced the release of IL-1β, IL-18, and HMGB1 and caused the translocation of HMGB1 from the fibroblast nucleus to the cell membrane, where it could bind with RAGE. Subsequently, in the synovial tissue of KOA model rats, we observed that inhibiting HMGB1, RAGE, and SMAD3 could alleviate the expression of synovial fibrosis markers (Collagen I, TIMP1, Vimentin, and TGF-β1) at both the mRNA and protein levels. Besides, HE and Sirius Red staining were used to observe the transverse diameter of the right knee. In conclusion, macrophage pyroptosis induced IL-1β, IL-18, and HMGB1, which could be caused HMGB1 to translocate from the fibroblast nucleus and bind with RAGE, activating the TGF-β1/SMAD3 signaling pathway and affecting synovial fibrosis.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.